KERRVILLE, Texas — Many people in Houston are feeling the effects of the Central Texas flooding.

As of Friday afternoon, at least 13 people had died and more than 20 children were missing from a camp. The exact number of missing people was not known.

The floodwaters devastated Kerr and Kendall counties. Lt. Gov. Dan Patrick, who is acting governor since Gov. Greg Abbott is out of the state, said the Guadalupe River rose 26 feet in about 45 minutes on Friday morning.

A Houston man and the group he was with were stranded in the floodwaters for a while on Friday morning.

He was at an Airbnb in Kerrville with a group of 13 friends celebrating a birthday when the water started rising.

They woke up to a terrifying scene.

When they woke up around 7 a.m., Erick Castro and his friends took video of the Guadalupe River rushing around their Airbnb. They were on the second floor of the home and the water got inches away from the balcony railing. He said the cars they drove to Kerrville were either submerged or swept away.

“It was a very scary situation. We were literally surrounded by the entire river. We looked out the front door, and the water was at the level of the stairs. We looked out the back porch, and the water was visible. It was … the whole river, the entire house, was surrounded by water,” Castro said.

They called 911 and were told that rescue crews would try to send boats but they were inundated with requests. Luckily, the property owners across the street spotted them and helped them get to safety.

“Fortunately, the water had receded enough to where we were able to walk through waist-deep water. But we didn’t know that. We didn’t know how deep the water was, so they are the ones that gauged the depth of the water for us,” Castro said.

Castro said he and his friends, as well as the five dogs they brought with them, were all able to make it out of the floodwaters safely.

Some of them got rides to San Antonio to get rental cars and others stayed back with the people who helped rescue them.